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Finding the Fourth Proportional to 539,687.20, 807,457.20 and 353,063.20

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Solution

The fourth proportional to 539,687.20, 807,457.20 and 353,063.20 is: 528,238.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,687.20 : 807,457.20 = 353,063.20 : x
  2. Step 2: Convert to fraction form
    539,687.20/807,457.20 = 353,063.20/x
  3. Step 3: Cross multiply
    539,687.20x = 807,457.20 × 353,063.20
  4. Step 4: Simplify right side
    539,687.20x = 285,083,422,895.04
  5. Step 5: Solve for x
    x = 285,083,422,895.04/539,687.20
  6. Step 6: Final answer
    x = 528,238.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.